Machines



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0. WILSON'& J. PALMER.

STOP MOTION MECHANISM FOR KNITTING MACHINES. No. 316,423. I? Pate1fizgl Apr. 21, 1885.

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UNITED STATES OLIVER WILSON AND JOHN PALMER,

PATENT OF PHILADELPHIA, PA., ASSIGNORS TO J. MARTIN YARDLEY AND OLIVER WILSON, OF SAME PLACE.

STOP-MOTION MECHANISM FORKNITTING it/IACHIINES.

SPECIFICATION forming part of Letters Patent No. 316,423, dated April 21,1885.

Application filed January 13, 1385.

15 plan view of a portion thereof on an enlarged scale, the spindle being shown in section. Fig. 3 represents a vertical section thereof in line m, Fig. 2.

Similar letters of reference indicate corresponding parts in the several figures. 1

Our invention consists of improvements in the stop-motion mechanism of a balmoral or other knitting-machine,whereby, in the event of breakage of the yarn or thread or the emp- 2 5 tying of spools or bobbins, the machine will be automatically stopped,as will be hereinafter fully set forth.

Referring to the drawings, A represents a portion of a balmoral knitting-machine, which, excepting the attached features of our invention, is of well-known construction.

13 represents the drivingshaft, the same being properly mounted on the frame of the machine, and carrying a sliding bevel-wheel, O,

with which is splined thereon, and may be engaged and disengaged from a bevel-wheel, D, which latter engages with the gearing of the machine.

E represents the shipper or lever, which is connected with the sleeve or hub of the wheelO, and pivoted to the frame of the machine, as usual.

To a bracket, F, which is connected with the frame of the machine on the side thereof coinciding with the handle end of the lever E, is fitted a vertically-movable spindle, G, which is of such length that when it is in its lowermost position it is in the path of the lever E, (see Fig. 3,) and serves to control the same, as 5o will be hereinafter set forth.

(No model.)

A horizontally-arranged plate or catch, H, is pivoted to the bracket F adjacent to the spindle G and engaging with said spindle, so as to prevent the elevation of the same, a recess or shoulder, a, being formed on the spindle to receive said plate H.

.I represents a spring, which is connected with the bracket F, and presses upwardly against the spindle for elevating the latter when released from the holding action of the catch H.

To the portion of the frame of the machine opposite to the frame F is attached abracket,

K, on which is mounted a drum, L, which is operated by the driving-shaft B through the medium of suitable gearing or devices, which in the present case consist of a pulley, b, on the drum, a pulley, c, on the driving-shaft, and a belt, d, passing around said pulleys.

On the bracket K is mounted :a shaft, M, to which are connected a crank, N, and a series of upright arms, 0, the upper ends of the latter having pivotedto them the guide-arms P, which project over the drum L and have the tendency to lower toward said drum, said arms I? having weights 6, which may be adjusted so as to render said arms quite sensitive in their action, it being noticed that the yarn which is fed to the machine is passed from the spools or bobbins through eyes on said arms P,whereby the latter are held in elevated positions. (See Figs. 1 and 3.) The arms 1? pass through stops Q, secured to the shaft M, and are there by limited in their upward motions.

The catch H and crank N are connected by a rod, B, whereby the motion of the crank is imparted to the catch and the latter withdrawn from the spindle when so required.

On the periphery of the drum L is a series of transversely-extending wings, S,with which the ends of the arms P engage when the latter drop, due to the breaking of the yarn.

Connected with the lever E and the frame of the machine is a spring, T, whose tendency is to draw the said lever in direction from the spindle, which is occasioned when the machine is to be stopped.

The operation is as follows: When the machine is running, the drum L rotates, the arms P being held clear of the same by the yarn fed to the machine, it being noticed that the lever 10c E is controlled by the spindle G, so that the l we claim as new,

, wheel 0 is held engaged with the wheel D.

When the yarn breaks or a spool or bobbin is empty, the relative guide-arm P, which has been previously held, is permitted to drop, (see arrow 1,)and so comes in contact with one of the wings of the drum L, whereby it is forced in the direction of arrow 2, and 'as it carries with it its connected arm 0 the rod R is moved in the direction of arrow 3. This draws the catch H from the recess a of the spindle G in the direction of arrow 4, and the spindle rapidly rises, due to the spring J, thus clearing the lever E. The said lever E, being no longer held in place or controlled by the lower'end of the spindle G, is caused by the contraction-of the spring T to move the Wheel C- on the driving-shaft B from engagement with the bevel-wheel D, connected with the gearing of the machine, thereby cutting off th e motive power and causing the stoppage of the said machine. When the yarn is reunited or a fresh spool or bobbin applied, the parts of the machine are reset, so that the lever E is again controlled by the spindle G, and thelat ter bythe catch H, the latter beingheld in position in the recess or shoulder a as long as the arms P are controlled by the yarn.

' Having thus described our invention, what and desire to secure by Letters Patent, is

1. The winged drum L, in combination with means for operating said drum, the shaft M, having the upright arms 0, weighted guidearms P, and stops Q, substantially as and for the purpose set forth.

2. The winged drum L, in combination with the guide-arm P, upright arm 0, to which said guide-arm P is pivotally secured, the shaft M, crank N, rod R, catch H, and spindle G, substantially as and for the purpose set forth.

3. A winged drum and means for operating the same, in combination with a guide-arm, an upright arm to which said guide-arm is pivotally secured, a shaft, a crank secured thereto, the catch H, a rod connecting said crank and catch, spindle D, having a shoulder, the spring J, lever E, spring T, wheel 0. and driving-shaft B, said parts being arranged and combined substantially as and for the purpose set forth.

OLIVER WILSON. JOHN PALMER. WVitnesses:

J OHN A. WIEDERsHEIM, A. P. GRANT. 

